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R. L ELDREDGE.

SPANNER LUG.

APPLICATION FILED FEB. H), 1919.

Patented June 3, 1919.

m m w W ROBERT J. ELDREDGE, 01 WAVERLY, IOWA.

Specification of Letters Patent.

Patented June 3, 1919.

Application filed February 10, 1919. Serial No. 276,201.

To aZZ whom it may concern:

Be it known that I, ROBERT J. ELDREDGE, a citizen of the United States,residing at Waverly, in the county of Bremer and State of Iowa, haveinvented certain new and useful Improvements in Spanner-Lugs; and I do cerlare the following to be a full, clear,

and exact description of the invention, such as will enable othersskilled in the art to which it appertains to make and use the same.

My invention relates to improvements in devices commonly known to thetrade as spanner lugs, intended to anchor the ends of silo or tankhoops, without the necessity of extending them across the doors or otheropenings. I am aware that devices for this purpose have heretofore beendevised, but the object of my invention is to improve upon theirconstruction to such an extent as to render manufacture and installationless expensive and less arduous, and at the same time to provide adevice which will be more efiicient than those heretofore employed.

With the above end in view, the invention resides in the novelconstruction hereinafter fully described and claimed, the descriptivematter being supplemented by the accompanying drawing which forms a partof this application.

Figure 1. is a side elevation of the invention installed upon a silo.

Fig. 2 is a horizontal section of the line 2-2 of Fig. 1.

Fig. 3 is a detail perspective view.

in the drawings above briefly described, the nun'ieral 1 designates arectangular frame consisting of upper and lower strap iron bars 2 andangle iron end bars 3 hav ing their ends riveted at 4. to the ends ofthe bars 2, so that one flange 5 of each end bar extends outwardly fromthe frame as shown. Metal channels 6 are spaced outwardly from and areparallel with the central portions of the end bars 3, and each channelis by preference formed of two lengths of angle iron 7, these lengthsbeing so arranged that their flanges 8 and 9 form, respectively, theside flanges and the body portions of the channels. Strap iron bars 10are secured at one end by the rivets a, between the bars 2 and 3, thebars 10 at each end of the frame being disposed in outwardly convergingrelation and having their outer ends given a quarter twist at 11 andinserted between the flanges 9 of the two on the plane rangeinent metalchannels 6, rivets or other fasteners being passed through said ends andflanges, as shown clearly in Figs. 1 and 3.

Between their ends, the body portions of the metal channels 6, whichportions are formed by the flanges 9, are provided with openings 13 toreceive the ends H of a silo er tank hoop, the nuts 15 of said hoop endsengaging the innermost of said flanges 9 when the frame 1 is in placearound a doorway or other opening 16 in the silo or tank. The innermostof the flanges 7 rest against the wall of the silo or tank as seen inFig. 2 and time space the nuts 15 outwardly therefrom to such an extentas to permit easy tightening of said nuts by means of a wrench; and whenthis tightening takes place, the channels 6 will withstand the strainwithout warping as is the case when merely one angle iron is providedfor engagement with each nut 15. The latter arcxerts all pull upon oneflange of the angle iron and thus twists or cants the latter so that itsother flange injures the silo or tank wall. By giving the bars 10 thequarter twist at 11, the use of metal channels instead of angle iron ispermitted, and said bars may be attached to the body portions of saidchannels so that the central strain exerted by the nuts will becentrally received by the bars and will thus have no tendency to bend ortwisteither these bars or the channels.

Preferably used in connection with the features above described, are twoangle iron strut bars 17 which are riveted at 18 to the bars 10, inclose proximity to the end bars 8, one flange 19 of each bar 17extending outwardly beside the adjacent flange 5. By this arrangement,inw rd swinging of the bars 10, which would be allowed should bending ofthe end bars 3 take place, is prevented, siuce the two bars 3 and 17 ateach end of the frame will positively resist the strain and will serveto brace each other against longitudinal bowing.

By constructing the device in the manner shown and described, it may beeasily and inexpensively constructed of ordinary strap iron and angleiron and no forging or weld ing whatever is necessary. In addition tothese manufacturing advantages, the device will be most eflicient inuse, particular emphasis being laid upon the fact that the frame cannotvertically collapse, due to the twin bars 3 and 17; and upon the quarterflanges forming twist 11, together with the use of the channels 6.

Since probably the best results are obtained from the details disclosed,they may well be followed, but within the scope of the invention asclaimed, numerous minor changes may well be made and it is to beunderstood that the device may be used wherever applicable.

I claim:

1. A spanner lug comprising a rectangular frame, relatively short, metalchannels spaced outwardly from and parallel with the central portions ofthe frame ends, the side flanges of said channels extending away fromsaid frame ends, and two pairs of strap metal bars secured respectivelyto the frame ends and converging toward said metal channels, said barsbeing given a quarter twist and having their outer ends secured to thebody portions of said channels, at the ends of the latter, said bodyportions of the channels having central openings to receive the threadedends of a silo hoop or like member.

2. A spanner lug comprising a rectangular fran? e, relatively short,metal channels spaced outwardly from and parallel with the centralportions of the frame ends, each of said metal channels being formed oftwo lengths of angle iron disposed side by side with the side flanges ofsaid channels extending away from said frame ends, two pairs of strapmetal bars secured respectively to said frame ends and converging towardsaid channels, said converging bars being given a quarter twist andhaving their outer ends inserted between the angle iron the bodyportions of said channels, and fasteners passing through said bar endsand flanges to secure them together, said last named flanges having cen-Gopies of this patent may be obtained for five cents each, by addressingthe Washington, D. 0.

tral openings to receive the threaded ends of a silo hoop or likemember.

3. A spanner lug'comprising a rectangular frame having end bars of angleiron, outwardly converging bars secured to the corners of said frame,the outer ends of said bars having means for attaching thereto the endsof a silo hoop or like member, and angle iron strut bars secured attheir ends to said converging bars and located in close proximity tosaid angle iron end bars, whereby the outwardly extending flanges ofsaid end and strut bars may serveto brace each other.

4... A spanner lug comprising a rectangular frame having angle iron endbars, metal channels spaced outwardly from and parallel with the centralportions of said end bars, each of said metal channels being formed oftwo lengths of angle iron disposed side by side with the side flanges ofsaid channels extending away from said end bars, strap metal barssecured to the corners of sai frame and converging toward said channels,said converging bars being given aquarter twist and having their outerends inserted between the angle iron flanges forming the body portionsof said channels, fasteners passing through said bar ends and flanges tosecure them together, said last named flanges having central openings toreceive the threaded ends of a silo hoop or like member, and angle ironstrut bars secured at their ends to said convergmg bars and located inclose proximity to said angle iron end bars, whereby the outwardlyextending flanges of said end and strut bars may serve to brace eachother.

In testimony whereof I have hereunto set my hand.

ROBERT J ELDR-EDGE.

Commissioner of Iatents,

